Cisco Catalyst IE3300 Expansion Module, 4-Port | Industrial Switching — CON-SNBD-IEM330U4

Add port capacity to Cisco Catalyst IE3300 platforms without replacing the switch. This 4-port expansion module is designed for industrial networks that need to scale in place while preserving the operational model already built around Cisco infrastructure. For plant floors, utility sites, and distributed edge cabinets, expansion modules help keep network design consistent as device counts rise. That matters when downtime is expensive, access is limited, and every added connection must fit into a managed industrial architecture. This module is a practical choice when you need to extend connectivity on an IE3300 deployment while maintaining a Cisco-aligned environment. It supports incremental growth, reduces the need for a larger chassis swap, and helps protect prior investment in the existing switch platform. Because this is a JTFp-next-business-day item, it also fits procurement cycles where speed matters as much as technical fit. The result is faster deployment planning, less disruption, and a cleaner path to expanding the network at the edge. Ideal For Adding ports to an IE3300 switch in a plant-floor cabinet Extending connectivity for industrial devices at a utility substation Scaling a distributed edge network without replacing the base switch Supporting rapid deployment when the network design is already standardized on Cisco Why This Product 1 Adds 4 ports without replacing the base IE3300 switch 2 Keeps the deployment aligned to Cisco industrial networking 3 Faster to deploy than a full switch replacement 4 Useful when cabinet space and downtime are constrained